I'm sure everyone here is happy that's working out for you. I've heard of such products like the "Slime Bag" that filter at the return.

But you still must concentrate on ensuring your water is sanitary, and I've seen no indication that you realize that, even though the water is clear. You haven't posted any test results, nor indicated your plans for chlorinating your pool. Without it, your husband might as well be taking his water therapy in, to continue your analogy, a toilet.

The microbes and bacteria are still there and you must kill them for his safety. I understand the need for constant P/T. I've had both hips replaced and regular exercise is critical to controlling and even eliminating ongoing pain. And, if you can do it on your own without expensive therapists, that's even better.

But what we always tell people: It's YOUR pool, not ours and the final responsibility for it is ultimately yours. We can only suggest courses of action that have worked for others here and elsewhere.

Good luck.